CVE-2026-83404

Awaiting Analysis Awaiting Analysis - Queue

Unauthenticated Data Access in MySQL Connector/Python

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/Python). The supported version that is affected is 26.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-27

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-83404

EUVD

EUVD-2026-106322

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	MySQL Connectors	26.7.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle MySQL Connectors, specifically affecting version 26.7.0 of the Connector/Python component. It allows unauthenticated attackers with network access to exploit it via multiple protocols. Successful exploitation can lead to unauthorized access to critical data or complete access to all accessible data in MySQL Connectors.

Impact Analysis

The vulnerability can result in unauthorized access to sensitive data stored in MySQL databases. Attackers could read or exfiltrate confidential information without needing credentials, potentially leading to data breaches, financial loss, or reputational damage.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other data protection regulations due to unauthorized data access. Organizations may face legal penalties, fines, or mandatory audits if sensitive data is compromised through this flaw.

Mitigation Strategies

Upgrade MySQL Connector/Python to a version unaffected by this vulnerability. If using version 26.7.0, apply the latest patch from Oracle. Monitor network traffic for unauthorized access attempts to MySQL services.

Hi! I’m here to help you understand CVE-2026-83404. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...